Update fw_marlin.md

Author: 1coderookie

docs/firmware/fw_marlin.md

@@ -527,12 +527,15 @@ This seems to be due to the fact that (afaik) there's some kind of problem with
 
 
 ## Mods
-Once I'll come across compiled and modded versions of the original firmware which are being offered by users, I'll list them here.  
-  
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 !!! warning
 
     Use at your own risk!  
 
+- User [that-ambuj](https://github.com/that-ambuj) offers a slightly modified stock firmware with MEATPACK and other features enabled in [his GitHub repository](https://github.com/that-ambuj/Kobra2_Neo/tree/octoprint-stutter-fix).
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